Optical design and testing of a fast,large aperture,infrared space telescope |
| |
Authors: | C M Humphries Y Nevo E Ettedgui-Atad J W Harris |
| |
Institution: | (1) Royal Observatory, EH9 3HJ Blackford Hill, Edinburgh, UK |
| |
Abstract: | An optical design study for a next generation infrared space telescope has been performed. The concept is that of a passively cooled telescope of minium aperture 2.5 metre with an F/1.2 primary and wavelength coverage from = 2 to at least 40 m, and possibly to 100 m. Compactness, low thermal emission from the optics and structure, diffraction limited imaging at = 2 m, and sensitivity to misalignment aberrations and manufacturing errors were the main considerations for this study. Ray tracing results are presented showing the characteristics of the various designs considered. A preliminary investigation of stray light properties is also given. Special emphasis has been placed on the testing of such a fast primary, and optical systems using a lateral shearing interferometer are described for testing both the primary and the primary/secondary combination. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|